FYI: it looks like slate has switched battery chemistry and suppliers. They will now be using LFP batteries. Cheaper, but they'll last longer. Especially if you charge them to 100% and discharge them below 15%.
An overall win, as there was a zero chance I would have bought one if they put the NMC batteries in it they were going to use.
There will no longer be battery options for a small 150 mile range battery or a bigger battery that would go around 240 miles, though. Now (due to LFP batteries not being as energy dense) there's only going to be one battery option that they claim will have a 205 mile range.
Unfortunately for me, this means I won't be getting one. I need to go 180 miles round trip between charges, and that's just cutting it way too close. Especially during winter time when the range would be reduced by quite a bit.